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Finding the Fourth Proportional to 534,479.40, 737,643.78 and 308,133

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Solution

The fourth proportional to 534,479.40, 737,643.78 and 308,133 is: 425,259.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,479.40 : 737,643.78 = 308,133 : x
  2. Step 2: Convert to fraction form
    534,479.40/737,643.78 = 308,133/x
  3. Step 3: Cross multiply
    534,479.40x = 737,643.78 × 308,133
  4. Step 4: Simplify right side
    534,479.40x = 227,292,390,862.74
  5. Step 5: Solve for x
    x = 227,292,390,862.74/534,479.40
  6. Step 6: Final answer
    x = 425,259.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.